I don’t know how to grieve

My baby boy died on the 14th, on the 13th I was crying a lot and on the 14th too, the 15th I had an absolute mental breakdown and now I can’t seem to get sad anymore. I still carry his favourite thing with me everywhere and people get mad because I’m getting new ferrets, but it doesn’t mean I’m replacing him? My time with ferrets wasn’t done but I feel like because I can’t cry over my loss right now it feels like I’m over it which am I? I don’t think so he was such a sweetheart I just can’t cry about it and it makes me feel like I’m faking it. Does this make me a bad person.?